We have a Primary and 2 Satellite ZCM servers, all running 11.1

I am planning to upgrade everything up to the latest 11.2.1 MU2.

I would like to know what the recommended sequence is.

Should I update only the Primary all the way to 11.2.1 MU2 and THEN turn
on the updates to the Satellites ?

Or should I update the Primary to 11.2, push 11.2 to the Satellites,
update the Primary to 11.2.1 MU2 and then push 11.2.1 MU2 to the
Satellites ?

Or is there another better suggested sequence ?

It seems to make the most sense to get the Primary completely updated
before turning on the updates to the Satellites if that approach will work.

I was not planning to turn on any agent updates to the workstations
until all of the servers were completely updated to 11.2.1 MU2.